In an experiment to estimate the diameter of a cylindrical wire, a thin thread wraps round a cylinder exactly 30 times.
Calculate
a) The circumference of the cylinder if the length of the thread is 50cm.
b) The radius of the wire
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length 550cm of thin thread wraps around a cylinder exactly 25 times . Calculate circumference and radius of cylinder. 2. See answers ... Length of thread , L = 550
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